Table 3.
List of standards (and their verified values) used to correct for instrument drift and normalize the δ13C of plant samples analyzed at the Stable Isotope Facility at the Waite Campus of CSIRO and the Mawson Analytical Spectrometry Services (MASS) Facility, University of Adelaide.
| Standard | Verified δ13C Value (‰) | Facility |
|---|---|---|
| USGS-40 | −26.39 | CSIRO/MASS |
| High Organic Sediment Standard OAS | −28.85 | CSIRO |
| Wheat Flour Standard OAS | −26.43 | CSIRO |
| Sorghum Flour Standard OAS | −13.78 | CSIRO |
| Glycine | −31.20 | MASS |
| Glutamic Acid | −16.72 | MASS |
| Triphenylamine | −29.20 | MASS |
| USGS 41 | −37.63 | MASS |
USGS-40 is a certified standard, all others were calibrated in-house by each facility.